>Hi,
> When i type 'modi form c:\project...\conv' to modify the form, the sysetm appear a messagebox and written as 'mismatched pushjmp/popjmp call', and i choose 'OK', then the Visual Foxpro automatically quit.
>
> How can i modify this again, because this form is very important to me, pls help, thank you!
>
>
> Aston

Aston,

The only itme I saw that error it was the mouse driver that was at the root of it. It could be almost anything though, a video driver, a printer driver any software that is running at the same time as VFP. The error is referring to a jump in memory that VFP cannot make.